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Uptake of some heavy metal(oid)s by sunflower 向日葵对重金属(类)的吸收
Chemia Naissensis Pub Date : 1900-01-01 DOI: 10.46793/chemn5.2.73p
Stefan Petrović, J. Mrmošanin, B. Arsić, A. Pavlović, S. Tošić
{"title":"Uptake of some heavy metal(oid)s by sunflower","authors":"Stefan Petrović, J. Mrmošanin, B. Arsić, A. Pavlović, S. Tošić","doi":"10.46793/chemn5.2.73p","DOIUrl":"https://doi.org/10.46793/chemn5.2.73p","url":null,"abstract":"Plant parts of sunflower (Helianthus annuus L.): root, stem, leaf, and seed, as well as the soil on which this plant culture was grown were analyzed for the content of As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn using Optical emission spectrometry with inductively coupled plasma (ICP-OES). The samples were prepared by wet digestion. To assess the degree of bioaccumulation in plant parts and the translocation of the examined elements from the roots to the above-ground plant parts, the Biological Concentration Factor (BCF), Mobility Ratio (MR), and Translocation Factor (TF) were calculated. BCF and MR values are less than 1 for all elements while TF (leaf/root) values for As, Cd, Cu, Fe, and Mn and TF (stem/root) values for Cu are higher than 1.","PeriodicalId":351621,"journal":{"name":"Chemia Naissensis","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133694304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Polyphenolic profile of selected varieties of Serbian berries 塞尔维亚浆果品种的多酚谱
Chemia Naissensis Pub Date : 1900-01-01 DOI: 10.46793/chemn5.1.24m
J. Mrmošanin, Milena Nikolić, M. Mitić, S. Tošić, A. Pavlović
{"title":"Polyphenolic profile of selected varieties of Serbian berries","authors":"J. Mrmošanin, Milena Nikolić, M. Mitić, S. Tošić, A. Pavlović","doi":"10.46793/chemn5.1.24m","DOIUrl":"https://doi.org/10.46793/chemn5.1.24m","url":null,"abstract":"Selected varieties of strawberries, blackberries, and blueberries grown in Serbia have been analyzed, and their polyphenolic profile was determined by HPLC analysis. The occurrence of phenolic acids, flavonols, and anthocyanins has been examined. Caffeic, p-coumaric, ferulic, and ellagic acid were identified and quantified. Six flavonols have been identified in berry samples: quercetin, quercetin-glucoside, quercetin-galactoside, kaempferol, kaempferol-glucoside, and rutin. The following anthocyanins were found in strawberries: pelargonidin-glucoside, pelargonidin-rutinoside, cyanidin-glucoside, and cyanidin-malonylglucoside. Cyanidin-glucoside, cyanidin-rutinoside, and cyanidin-malonylglucoside were found in blackberry samples. The following anthocyanins were found in blueberries: delphinidin-galactoside, delphinidin-glucoside, delphinidin-arabinoside, cyanidin-galactoside, cyanidin-glucoside, cyanidin-arabinoside, petunidin-arabinoside, petunidin-galactoside, peonidin-galactoside, and malvidin-galactoside. Statistical multivariate method – principal component analysis (PCA) was used to classify phenolic acids, flavonols, and anthocyanins according to their contents in berry samples. Cluster analysis (CA) was used to classify samples based on the individual polyphenolics content.","PeriodicalId":351621,"journal":{"name":"Chemia Naissensis","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116838583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Betalains-natural pigments for healthy food 甜菜素——健康食品的天然色素
Chemia Naissensis Pub Date : 1900-01-01 DOI: 10.46793/chemn3.1.032p
D. Paunović, B. Stojanović, Danica S. Dimitrijević, J. Krstić, D. Kostić
{"title":"Betalains-natural pigments for healthy food","authors":"D. Paunović, B. Stojanović, Danica S. Dimitrijević, J. Krstić, D. Kostić","doi":"10.46793/chemn3.1.032p","DOIUrl":"https://doi.org/10.46793/chemn3.1.032p","url":null,"abstract":"The application of artificial colors in practice has shown many negative effects on food safety and human health. Allergic reactions to artificial colors are very common, especially in children. Some research suggests that prolonged use of artificial colors can be the cause of cancer. Betaine is one of the most widespread groups of plant pigments, which is increasingly being researched in recent times. Therefore, the use of cheap plant pigments such as betaine is important. They are safe for use in food and have good biological and pharmacological properties. Some of them have an antioxidant, antimicrobial, antilipidemic, anticancer role. They can be used in food instead of anthocyanins. Some properties are beneficial to our health due to which they can be used to enhance the flavor and color of ice-cream, jellies, jams, desserts, sauces, sweets, tomato paste, breakfast cereals.","PeriodicalId":351621,"journal":{"name":"Chemia Naissensis","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132593424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Carbon nanotube-based electrochemical sensors for pesticide determination in aqueous solutions: a review 基于碳纳米管的水溶液中农药电化学传感器研究进展
Chemia Naissensis Pub Date : 1900-01-01 DOI: 10.46793/chemn1.1.130c
Jelena Čović, A. Zarubica, A. Bojić, M. Ranđelović
{"title":"Carbon nanotube-based electrochemical sensors for pesticide determination in aqueous solutions: a review","authors":"Jelena Čović, A. Zarubica, A. Bojić, M. Ranđelović","doi":"10.46793/chemn1.1.130c","DOIUrl":"https://doi.org/10.46793/chemn1.1.130c","url":null,"abstract":"Excellent mechanical, electrical and magnetic properties of carbon nanotubes (CNT) make CNTs a promising material for the development of electrochemical sensors. Pesticides are very important for an increase in crop yields. However, the intensive use of pesticides can lead to the accumulation of their remains, thus creating a severe problem and risk to human and environmental health. Those are the reasons why the monitoring of pesticides in the environment is extremely important. For that purpose, electrochemical sensors based on carbon nanotubes were designed, and their main aim is pesticide monitoring at environmental samples. A review of the recent studies of environmental monitoring of pesticides using electrochemical sensors based on carbon nanotubes is presented.","PeriodicalId":351621,"journal":{"name":"Chemia Naissensis","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132958188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Intra- and intermolecular H-bonding of benzotriazole UV stabilizers evidenced using 1D nuclear Overhauser effect experiments 用一维核Overhauser效应实验证明了苯并三唑类紫外线稳定剂分子内和分子间的氢键
Chemia Naissensis Pub Date : 1900-01-01 DOI: 10.46793/chemn3.2.028h
J. Hobley, V. Malatesta
{"title":"Intra- and intermolecular H-bonding of benzotriazole UV stabilizers evidenced using 1D nuclear Overhauser effect experiments","authors":"J. Hobley, V. Malatesta","doi":"10.46793/chemn3.2.028h","DOIUrl":"https://doi.org/10.46793/chemn3.2.028h","url":null,"abstract":"The UV absorber protection mechanism of 2-hydroxyphenylbenzotriazoles is based upon energy dissipation via an excited state proton transfer from the phenolic OH group to the triazole nitrogen(s). Using 1H-NMR NOE experiments we have established that 2-(2’hydroxy-5′- methylphenyl)-benzotriazole (UVA1) exists in chloroform as an intramolecularly H-bonded form whereas in DMSO this bond is disrupted by the formation of intermolecular H-bonding to the solvent. Conversely, for compounds 2-(2′-hydroxy-3′,5′-di(1,1-dimethyl propane))-benzotriazole (UVA2), and 3′-methylene-hydantoin-2-(2′-hydroxy-5′-methylphenyl)-benzotriazole (UVA3) having bulky substituents ortho to the phenolic OH group 1H-NMR NOE experiments indicate that upon changing solvent from DMSO to chloroform the strength of the intramolecular H-bond is not appreciably affected. The implication of the H-bond strength upon the UV stabilizing effectiveness is discussed.","PeriodicalId":351621,"journal":{"name":"Chemia Naissensis","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117049011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
History of the Department of Chemistry, the University of Niš, Republic of Serbia 塞尔维亚共和国尼日什大学化学系历史
Chemia Naissensis Pub Date : 1900-01-01 DOI: 10.46793/chemn1.1.001k
D. Kostić
{"title":"History of the Department of Chemistry, the University of Niš, Republic of Serbia","authors":"D. Kostić","doi":"10.46793/chemn1.1.001k","DOIUrl":"https://doi.org/10.46793/chemn1.1.001k","url":null,"abstract":"Department of Chemistry was founded in 1971. In its long history, it became famous in Serbia and abroad because of the success and skills of its undergraduates, graduate students, and PhDstudents. At the Department of Chemistry, since the founding, in addition to teaching, fundamental and applied researches were carried out in various fields of chemistry. Scientific activity was accomplished through many projects funded by the Republic of Serbia and international projects and within the framework of the Institute of Chemistry. Up to the end of 2017, a more than 1000 students graduated at the Department of Chemistry. Starting from the school year 2005-2006, previous Diploma of high education has been equalized with Master's degree. One hundred and ten master theses and 105 doctoral dissertations were defended (41 according to the new accredited program). Under the new Bologna program, 160 students received bachelor’s degrees and 96 master’s degrees. Graduated chemistry professors have made a great contribution to the development of education in Serbia also contributing to the development of the chemical industry in Serbia, and it is worth mentioning that many of them are very successful in working abroad. Masters and PhDs of Chemistry are employed at many faculties and colleges in Serbia and abroad. Many of them are authors of a large number of scientific papers published in renowned world scientific journals.","PeriodicalId":351621,"journal":{"name":"Chemia Naissensis","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130306031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
GC-MS profile of homemade fruit brandies 自制水果白兰地的GC-MS谱图
Chemia Naissensis Pub Date : 1900-01-01 DOI: 10.46793/chemn5.1.88s
Jelena Stamenković, Gordana Stojanović
{"title":"GC-MS profile of homemade fruit brandies","authors":"Jelena Stamenković, Gordana Stojanović","doi":"10.46793/chemn5.1.88s","DOIUrl":"https://doi.org/10.46793/chemn5.1.88s","url":null,"abstract":"This study aimed to analyze volatile congeners in different types of homemade fruit brandies by applying gas chromatography coupled with mass spectrometry (GC-MS). Volatile compounds were analyzed in seven samples, and the number of identified compounds in the studied samples varied between 12 and 35. An enriched volatile profile was determined for the plum samples, whereas the number of identified compounds was significantly reduced in the case of pear and raspberry samples. From a qualitative point of view, brandies obtained from different fruits showed significant differences because only two compounds (furfural and ethyl decanoate) among 60 identified were found to be common to all examined samples. Regarding the class of identified compounds, esters were the most dominant class identified in all samples, with ethyl lactate being the most prevalent compound except the raspberry brandy sample, which was dominated by alcohols, with pentanol being the major compound. The results obtained in this study have shown that brandies from different fruits are very different in both qualitative and quantitative composition of volatile compounds.","PeriodicalId":351621,"journal":{"name":"Chemia Naissensis","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133693341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sulfonated „Lagenaria vulgaris“ shell as a potent biosorbent for copper at low pHs 磺化“Lagenaria vulgaris”壳作为低ph值下铜的有效生物吸附剂
Chemia Naissensis Pub Date : 1900-01-01 DOI: 10.46793/chemn5.1.47s
M. Stanković, Vladimir D. Dimitrijević, Dragan M. Đorđević, Aleksandar Bojić
{"title":"Sulfonated „Lagenaria vulgaris“ shell as a potent biosorbent for copper at low pHs","authors":"M. Stanković, Vladimir D. Dimitrijević, Dragan M. Đorđević, Aleksandar Bojić","doi":"10.46793/chemn5.1.47s","DOIUrl":"https://doi.org/10.46793/chemn5.1.47s","url":null,"abstract":"Lagenaria vulgaris shell is composed of lignocellulosic material with the ability to bind metal cations due to hydroxyl, carboxylic, lactonic, and phenolic groups present in its structure. To introduce a greater amount of sulphonic groups characterized by significant ion-exchanging capacity, oxidation, and successive sulfonation were performed. The efficiency of biosorbent based on chemically modified Lagenaria vulgaris shell for Cu(II) ion removal from aqueous solution was studied in batch conditions on various initial pHs. Results showed that removal efficiency (95%) did not change in the pH range from 2.0 to 5.0.","PeriodicalId":351621,"journal":{"name":"Chemia Naissensis","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129473246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Kinetic and Thermodynamic Characteristics of Thermal Degradation of Anthocyanins from Strawberry and Blueberry Commercial Juices 草莓和蓝莓商业果汁中花青素热降解的动力学和热力学特性
Chemia Naissensis Pub Date : 1900-01-01 DOI: 10.46793/chemn3.2.046m
M. Mitić
{"title":"Kinetic and Thermodynamic Characteristics of Thermal Degradation of Anthocyanins from Strawberry and Blueberry Commercial Juices","authors":"M. Mitić","doi":"10.46793/chemn3.2.046m","DOIUrl":"https://doi.org/10.46793/chemn3.2.046m","url":null,"abstract":"Thermal stabilities of anthocyanins in strawberry and blueberry commercial juices were studied over the temperatures 75, 85 and 95 oC. Results indicated that the thermal degradation of anthocyanins followed the first-order reaction kinetics. The temperature-dependent degradation was adequately modeled on the Arrhenius equation. During heating, anthocyanins in the strawberry juice degraded faster than in blueberry juice, with the activation energies of 74.16 kJ/mol and 65.75 kJ/mol, respectively. Cyanidin-3-glucoside (cyd-3-glu) was more susceptible to the thermal treatment than pelargonidin glycosides in strawberry juice. Delphinidin glycosides were more susceptible to the thermal treatment than cyanidin glycosides in blueberry juice. However, cyd-3-glu in strawberry juice was more sensitive to the thermal treatment than in blueberry juice. Obtained results for activation enthalpies indicated that the degradation process was endothermic and Gibbs free energy of activation indicated that they were not spontaneous.","PeriodicalId":351621,"journal":{"name":"Chemia Naissensis","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129612915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chair of Analytical and Physical Chemistry 分析和物理化学主席
Chemia Naissensis Pub Date : 1900-01-01 DOI: 10.46793/chemn1.1.018m
Snežana Mitić, S. Tošić, A. Pavlović, M. Mitić
{"title":"Chair of Analytical and Physical Chemistry","authors":"Snežana Mitić, S. Tošić, A. Pavlović, M. Mitić","doi":"10.46793/chemn1.1.018m","DOIUrl":"https://doi.org/10.46793/chemn1.1.018m","url":null,"abstract":"The Chair for Analytical and Physical Chemistry currently consists of ten professors and two associates. A number of researchers and other associates also contribute to the work carried out within the Chair. Throughout every level of the studies (Undergraduate Academic Studies, Master Academic Studies, and Doctoral Academic Studies), the students attend a great number of courses within these scientific fields. The members of the Chair are the authors of 14 university coursebooks, workbooks, as well as practicums. The professors, associates and researchers of the Chair deal with the following fields of scientific research: the GC-MS analysis of PAHs with the optimization of the method of samples preparation, the development and validation of the ICP-OAES methods, the development and validation of kinetic spectrophotometric methods, the HPLC determination of total polyphenols, flavonoids and anthocyanins with the examination of the kinetics of their degradation, the spectrophotometric and the cyclic voltammetry determination of antioxidant activity. A large number of papers has been published in international and national journals. The research laboratories are equipped with ICP-AES, HPLC, spectrophotometers, automatic titrator, analytical balances, high purity water system, vacuum evaporator, pH-meters, conductometers, and other minor laboratory equipment. The researchers of the Chair have participated in many national scientific-research projects, as well as international projects such as Erasmus, Tempus, FP7, The Researchers’ Night, and they have also attended the postdoctoral specializations and study visits abroad, which contribute to the good cooperation between the Chair and other universities in the world.","PeriodicalId":351621,"journal":{"name":"Chemia Naissensis","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114802201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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